During March 2026, abc3844@126.com refactored the Async Slot Migration (ASM) component in the redis/redis repository, focusing on improving modularity and maintainability. By removing the long-lived source_node pointer and introducing a clusterLookupNode function, they decoupled ASM from the core Cluster module, reducing cross-module dependencies. This architectural change, implemented in C and leveraging system programming and software architecture skills, established clearer boundaries between modules and enhanced testability. The work did not involve explicit bug fixes but addressed technical debt, enabling safer future changes and easier maintenance. The depth of the refactor reflects a thoughtful approach to sustainable code evolution.